containerd/cmd/ctr/checkpoint.go
Michael Crosby 00288bcb58 Update ctr containers and tasks command
This moves container and tasks commands under the containers and tasks
top level commands.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
2017-08-07 14:45:21 -04:00

55 lines
1.1 KiB
Go

package main
import (
"fmt"
"github.com/containerd/containerd"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
var taskCheckpointCommand = cli.Command{
Name: "checkpoint",
Usage: "checkpoint a container",
ArgsUsage: "CONTAINER",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "exit",
Usage: "stop the container after the checkpoint",
},
},
Action: func(context *cli.Context) error {
var (
ctx, cancel = appContext(context)
id = context.Args().First()
)
defer cancel()
if id == "" {
return errors.New("container id must be provided")
}
client, err := newClient(context)
if err != nil {
return err
}
container, err := client.LoadContainer(ctx, id)
if err != nil {
return err
}
task, err := container.Task(ctx, nil)
if err != nil {
return err
}
var opts []containerd.CheckpointTaskOpts
if context.Bool("exit") {
opts = append(opts, containerd.WithExit)
}
checkpoint, err := task.Checkpoint(ctx, opts...)
if err != nil {
return err
}
fmt.Println(checkpoint.Digest.String())
return nil
},
}